package io;

import java.io.*;

public class CopyDemo3 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("image.png");
        BufferedInputStream bis=new BufferedInputStream(fis);//输入缓冲流

        FileOutputStream fos=new FileOutputStream("image_cp3.png");
        BufferedOutputStream bos=new BufferedOutputStream(fos);//输出缓冲流

        int d;
        long start=System.currentTimeMillis();//读时间
        while ((d=bis.read())!=-1){
            bos.write(d);
        }
        long end=System.currentTimeMillis();//读时间
        System.out.println("复制完毕!耗时:"+(end-start) +"毫秒!");


        bis.close();
        bos.close();




    }
}
